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Recessed Washer NSN 5310-00-739-4190

Item Description

A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes washer, concave, retainer, packing, and thrust type washers. See also spacer, sleeve; and spacer, stepped.

NSN 5310-00-739-4190 NSN: 5310-00-739-4190

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Features and Characteristics

Hole Diameter
Between 0.395 inches and 0.400 inches
Outside Diameter
Between 0.570 inches and 0.610 inches
Recess Diameter
0.515 inches
Recess Depth
Between 0.060 inches and 0.070 inches
Material Thickness
Between 0.110 inches and 0.115 inches
Hardness Rating
Between 33.0 rockwell c and 38.0 rockwell c
Surface Finish
125.0 microinches all surfaces
Material
Steel comp 4140
Material Specification
Qq-s-624 federal specification single material response
Surface Treatment
Phosphate
Surface Treatment Specification
Mil-p-16232 military specification single treatment response
Style Designator
Recessed
FSC
5310 Nuts And Washers
NIIN
007394190
NSN
5310007394190

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
7790850
Cage Code:
19200
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7318220000
  • NAICS: 332722
  • SITC: 69422
  • Description: Washers other than lock washers, iron or steel
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5310-00-739-4190
What are the manufacturers of nsn 5310007394190?
Does this nsn 5310007394190 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310007394190
A washer of any peripheral shape having a centrally located hole. both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. the thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. the maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. excludes washer, concave, retainer, packing, and thrust type washers. see also spacer, sleeve; and spacer, stepped.
Does nsn 5310007394190 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310007394190 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310007394190?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
15933
FIIG:
A022B0
App. Key:
A
Cond. Code:
1
Status:
A

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